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gemini-2.5-flash-preview-09-2025 vs Grok 4.20 (Non-Reasoning)

Both have similar output pricing. Choose gemini-2.5-flash-preview-09-2025 or Grok 4.20 (Non-Reasoning) based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Specgemini-2.5-flash-preview-09-2025Grok 4.20 (Non-Reasoning)
Provider302.AIxAI
Input / 1M tokens$0.30$1.25
Output / 1M tokens$2.50$2.50
Context window1M1M
Parameters——
Open weightsNoNo
ReleasedSep 2025Mar 2026
LMArena (Chatbot Arena) Elo score1406—
LMArena Vision Elo score1253—
LiveBench score—37.9

FAQ

Is gemini-2.5-flash-preview-09-2025 or Grok 4.20 (Non-Reasoning) cheaper?

gemini-2.5-flash-preview-09-2025 and Grok 4.20 (Non-Reasoning) have comparable output pricing.

Which has the larger context window, gemini-2.5-flash-preview-09-2025 or Grok 4.20 (Non-Reasoning)?

Both models offer a similar context window.

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.